What is the main purpose of the exclusionary rule?

• A. To deter unconstitutional police conduct by excluding illegally obtained evidence.
• B. To deter conflicting police procedures from the court's viewpoint.
• C. To guarantee automatic suppression of all evidence found during an investigation.
• D. To ensure all evidence is admissible if credible.

Answer: (B)

At its core, the exclusionary rule is a constitutional remedy aimed at deterring police from conducting illegal searches and seizures. When evidence is obtained in violation of the Fourth Amendment, it is typically excluded in court to remove the incentive for officers to violate rights, thereby encouraging proper procedure. It’s not a blanket rule that suppresses everything found during an investigation, nor is it about resolving conflicts over police procedures, nor does it mandate automatic suppression of all evidence or guarantee admissibility simply because something seems credible. There are recognized exceptions and nuances (like good-faith or independent-source doctrines), but the fundamental purpose is to deter unconstitutional police conduct by excluding the unlawfully obtained evidence.